Custom MAD Concaves & Split Frames

Designed to be aggressive with quality, reliability and durability top of mind!

Our innovative bar-and-grate style modular and one piece MAD Concaves are built to last from AR200 metal, allowing for longer wear and sharpness. Their easy-to-change design allows you to customize your combine to the crop with different precision grate spacings. Our concaves are fit for every combine and every crop type. From alfalfa to chickpeas, MAD Concaves take the hassle out of changing concaves so you feel comfortable switching them out to get the best crop results during harvest. For more information on MAD Concaves, click here.

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CUSTOM MAD CONCAVES

The numbers .225, .300, .375, .437 represent the measurement of the gap between the bar; the gap being .225 of an inch.

For more information on the right configuration for your crop, scroll down to view our John Deere, New Holland, and CASE IH configuration guides.

.225 Concave

Front position
Reduce dockage
Hard thresh crops
Wheat, flax, canary seed

.300 Concave

Front position
Allows more seed out of concave reducing rotor loss
Large easy thresh cereals

.375 Concave

Mostly second position but used in front position for large cereal crops that need some threshing
All crops

.435 Concave

First and second position
Very easy thresh crops like hemp
Very large seed crops, chickpeas, faba beans

Finger Grate Concave

Front position
New design for shatter resistant canola
Minimal threshing
Increased separation
Canola, peas, barley, oats, sunflower, corn, and soybeans

Slotted Concave

Front position
No threshing, full separation
No cracking
Edible beans, canola, sunflower

Alfalfa Concave

Both positions
Specially designed

Round Bar Concave

Both positions
Full separation

SPLIT FRAMES AND ONE-PIECES

The new split frame MAD concaves with modular inserts, for John Deere and New Holland, was developed to be lighter (68lbs) and easier to handle and install into the combine. Once the frame is installed it is never removed, and the modular concaves (30lbs) are easy to insert and quick to swap out in mere minutes with two bolts per insert. This design optimizes your yield and saves on people power and recalibration time.